Voltage logging?

fordfanboi · Post by **fordfanboi** » Thu Mar 09, 2006 10:43 pm

Is there any sort of voltage logging I can view in the data logs for the MS II? I'd like to record what my voltage readings are.

Thanks!

bleoh · Post by **bleoh** » Fri Mar 10, 2006 8:47 am

IIRC that is one of the standard readings that is logged.

Bernard Fife · Post by **Bernard Fife** » Fri Mar 10, 2006 9:57 am

Bleoh, fordfanboi,

I don't think battery voltage is in the standard MS-II logs in order to manitain compaitibility with older logs. It is easily added though.

Add the line:

Code: Select all

entry = batteryVoltage,  "VBatt",       float,  "%.3f"

to the [Datalog] section of the megasquirt-II.ini file (near the end) and you will be logging battery voltage.

I use MegaLogViewer, so I can just select VBatt once I load the datalog to see the voltages.

Note that 'batteryVoltage' also needs to be in the 'Output Channels' in the INI file, but it should be there by default in MS-II in a line like:

Code: Select all

batteryVoltage = { batADC / 255.0 * 30.0 } ; Current MS power supply voltage.

More on voltage logging: http://www.msefi.com/viewtopic.php?p=94 ... batt#94115

Lance.

fordfanboi · Post by **fordfanboi** » Fri Mar 10, 2006 11:47 am

GREAT! Thanks much!

fordfanboi · Post by **fordfanboi** » Fri Mar 10, 2006 1:20 pm

I didn't see exactly what you typed in my .ini. Here's what I have - is it correct?

batteryVoltage = scalar, S16, 26, "v", 0.100, 0.0

Thanks!

Bernard Fife · Post by **Bernard Fife** » Fri Mar 10, 2006 1:39 pm

batteryVoltage = scalar, S16, 26, "v", 0.100, 0.0

fordfanboi,

Yes, that will work! You still need to add:

Code: Select all

entry = batteryVoltage,  "VBatt",       float,  "%.3f"

to the datalog section of the INI, of course.

Lance.

fordfanboi · Post by **fordfanboi** » Fri Mar 10, 2006 2:20 pm

Yep - got'r done!

Thanks much!